1. VA Puget Sound Health Care System, Seattle, Washington, USA
2. Department of Rehabilitation Medicine, University of Washington, Seattle, Washington, USA
3. Chronic Pain and Fatigue Research Center, Department of Anesthesiology, University of Michigan, Ann Arbor, Michigan, USA
4. Clinical Learning, Evidence, and Research (CLEAR) Center, University of Washington, Seattle, Washington, USA
5. Center of Excellence in Substance Addiction Treatment and Education, Seattle, Washington, USA
6. Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine, Seattle, Washington, USA